mod/parse_url.php

   1 <?php
   2 /* To-Do
   3 https://developers.google.com/+/plugins/snippet/
   4
   5 <meta itemprop="name" content="Toller Titel">
   6 <meta itemprop="description" content="Eine tolle Beschreibung">
   7 <meta itemprop="image" content="http://maple.libertreeproject.org/images/tree-icon.png">
   8
   9 <body itemscope itemtype="http://schema.org/Product">
  10   <h1 itemprop="name">Shiny Trinket</h1>
  11   <img itemprop="image" src="{image-url}" />
  12   <p itemprop="description">Shiny trinkets are shiny.</p>
  13 </body>
  14 */
  15
  16 if(!function_exists('deletenode')) {
  17         function deletenode(&$doc, $node)
  18         {
  19                 $xpath = new DomXPath($doc);
  20                 $list = $xpath->query("//".$node);
  21                 foreach ($list as $child)
  22                         $child->parentNode->removeChild($child);
  23         }
  24 }
  25
  26 function completeurl($url, $scheme) {
  27         $urlarr = parse_url($url);
  28
  29         if (isset($urlarr["scheme"]))
  30                 return($url);
  31
  32         $schemearr = parse_url($scheme);
  33
  34         $complete = $schemearr["scheme"]."://".$schemearr["host"];
  35
  36         if (@$schemearr["port"] != "")
  37                 $complete .= ":".$schemearr["port"];
  38
  39                 if(strpos($urlarr['path'],'/') !== 0)
  40                         $complete .= '/';
  41
  42         $complete .= $urlarr["path"];
  43
  44         if (@$urlarr["query"] != "")
  45                 $complete .= "?".$urlarr["query"];
  46
  47         if (@$urlarr["fragment"] != "")
  48                 $complete .= "#".$urlarr["fragment"];
  49
  50         return($complete);
  51 }
  52
  53 function parseurl_getsiteinfo($url, $no_guessing = false) {
  54         $siteinfo = array();
  55
  56         $siteinfo["type"] = "link";
  57
  58         $ch = curl_init();
  59         curl_setopt($ch, CURLOPT_URL, $url);
  60         curl_setopt($ch, CURLOPT_HEADER, 1);
  61         curl_setopt($ch, CURLOPT_NOBODY, 0);
  62         curl_setopt($ch, CURLOPT_TIMEOUT, 3);
  63         curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
  64         //curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
  65         curl_setopt($ch,CURLOPT_USERAGENT,' Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:24.0) Gecko/20100101 Firefox/24.0');
  66
  67         $header = curl_exec($ch);
  68         $curl_info = @curl_getinfo($ch);
  69         $http_code = $curl_info['http_code'];
  70         curl_close($ch);
  71
  72         if ((($curl_info['http_code'] == "301") OR ($curl_info['http_code'] == "302"))
  73                 AND (($curl_info['redirect_url'] != "") OR ($curl_info['location'] != ""))) {
  74                 if ($curl_info['redirect_url'] != "")
  75                         $siteinfo = parseurl_getsiteinfo($curl_info['redirect_url']);
  76                 else
  77                         $siteinfo = parseurl_getsiteinfo($curl_info['location']);
  78                 return($siteinfo);
  79         }
  80
  81         require_once("include/oembed.php");
  82
  83         $oembed_data = oembed_fetch_url($url);
  84
  85         if ($oembed_data->type == "link") {
  86                 if (isset($oembed_data->title))
  87                         $siteinfo["title"] = $oembed_data->title;
  88                 if (isset($oembed_data->description))
  89                         $siteinfo["text"] = trim($oembed_data->description);
  90                 if (isset($oembed_data->thumbnail_url))
  91                         $siteinfo["image"] = $oembed_data->thumbnail_url;
  92         }
  93
  94         // Fetch the first mentioned charset. Can be in body or header
  95         if (preg_match('/charset=(.*?)['."'".'"\s\n]/', $header, $matches))
  96                 $charset = trim(array_pop($matches));
  97         else
  98                 $charset = "utf-8";
  99
 100         $pos = strpos($header, "\r\n\r\n");
 101
 102         if ($pos)
 103                 $body = trim(substr($header, $pos));
 104         else
 105                 $body = $header;
 106
 107         $body = mb_convert_encoding($body, "UTF-8", $charset);
 108         $body = mb_convert_encoding($body, 'HTML-ENTITIES', "UTF-8");
 109
 110         $doc = new DOMDocument();
 111         @$doc->loadHTML($body);
 112
 113         deletenode($doc, 'style');
 114         deletenode($doc, 'script');
 115         deletenode($doc, 'option');
 116         deletenode($doc, 'h1');
 117         deletenode($doc, 'h2');
 118         deletenode($doc, 'h3');
 119         deletenode($doc, 'h4');
 120         deletenode($doc, 'h5');
 121         deletenode($doc, 'h6');
 122         deletenode($doc, 'ol');
 123         deletenode($doc, 'ul');
 124
 125         $xpath = new DomXPath($doc);
 126
 127         $list = $xpath->query("//meta[@content]");
 128         foreach ($list as $node) {
 129                 $attr = array();
 130                 if ($node->attributes->length)
 131                         foreach ($node->attributes as $attribute)
 132                                 $attr[$attribute->name] = $attribute->value;
 133
 134                 if (@$attr["http-equiv"] == 'refresh') {
 135                         $path = $attr["content"];
 136                         $pathinfo = explode(";", $path);
 137                         $content = "";
 138                         foreach ($pathinfo AS $value) {
 139                                 if (substr(strtolower($value), 0, 4) == "url=")
 140                                         $content = substr($value, 4);
 141                         }
 142                         if ($content != "") {
 143                                 $siteinfo = parseurl_getsiteinfo($content);
 144                                 return($siteinfo);
 145                         }
 146                 }
 147         }
 148
 149         //$list = $xpath->query("head/title");
 150         $list = $xpath->query("//title");
 151         foreach ($list as $node)
 152                 $siteinfo["title"] =  html_entity_decode($node->nodeValue, ENT_QUOTES, "UTF-8");
 153
 154         //$list = $xpath->query("head/meta[@name]");
 155         $list = $xpath->query("//meta[@name]");
 156         foreach ($list as $node) {
 157                 $attr = array();
 158                 if ($node->attributes->length)
 159                         foreach ($node->attributes as $attribute)
 160                                 $attr[$attribute->name] = $attribute->value;
 161
 162                 $attr["content"] = trim(html_entity_decode($attr["content"], ENT_QUOTES, "UTF-8"));
 163
 164                 switch (strtolower($attr["name"])) {
 165                         case "fulltitle":
 166                                 $siteinfo["title"] = $attr["content"];
 167                                 break;
 168                         case "description":
 169                                 $siteinfo["text"] = $attr["content"];
 170                                 break;
 171                         case "twitter:image":
 172                                 $siteinfo["image"] = $attr["content"];
 173                                 break;
 174                         case "twitter:card":
 175                                 $siteinfo["type"] = $attr["content"];
 176                                 break;
 177                         case "twitter:description":
 178                                 $siteinfo["text"] = $attr["content"];
 179                                 break;
 180                         case "twitter:title":
 181                                 $siteinfo["title"] = $attr["content"];
 182                                 break;
 183                         case "dc.title":
 184                                 $siteinfo["title"] = $attr["content"];
 185                                 break;
 186                         case "dc.description":
 187                                 $siteinfo["text"] = $attr["content"];
 188                                 break;
 189                 }
 190         }
 191
 192         //$list = $xpath->query("head/meta[@property]");
 193         $list = $xpath->query("//meta[@property]");
 194         foreach ($list as $node) {
 195                 $attr = array();
 196                 if ($node->attributes->length)
 197                         foreach ($node->attributes as $attribute)
 198                                 $attr[$attribute->name] = $attribute->value;
 199
 200                 $attr["content"] = trim(html_entity_decode($attr["content"], ENT_QUOTES, "UTF-8"));
 201
 202                 switch (strtolower($attr["property"])) {
 203                         case "og:image":
 204                                 $siteinfo["image"] = $attr["content"];
 205                                 break;
 206                         case "og:title":
 207                                 $siteinfo["title"] = $attr["content"];
 208                                 break;
 209                         case "og:description":
 210                                 $siteinfo["text"] = $attr["content"];
 211                                 break;
 212                 }
 213         }
 214
 215         if ((@$siteinfo["image"] == "") AND !$no_guessing) {
 216             $list = $xpath->query("//img[@src]");
 217             foreach ($list as $node) {
 218                 $attr = array();
 219                 if ($node->attributes->length)
 220                     foreach ($node->attributes as $attribute)
 221                         $attr[$attribute->name] = $attribute->value;
 222
 223                         $src = completeurl($attr["src"], $url);
 224                         $photodata = @getimagesize($src);
 225
 226                         if (($photodata) && ($photodata[0] > 150) and ($photodata[1] > 150)) {
 227                                 if ($photodata[0] > 300) {
 228                                         $photodata[1] = round($photodata[1] * (300 / $photodata[0]));
 229                                         $photodata[0] = 300;
 230                                 }
 231                                 if ($photodata[1] > 300) {
 232                                         $photodata[0] = round($photodata[0] * (300 / $photodata[1]));
 233                                         $photodata[1] = 300;
 234                                 }
 235                                 $siteinfo["images"][] = array("src"=>$src,
 236                                                                 "width"=>$photodata[0],
 237                                                                 "height"=>$photodata[1]);
 238                         }
 239
 240                 }
 241     } else {
 242                 $src = completeurl($siteinfo["image"], $url);
 243
 244                 unset($siteinfo["image"]);
 245
 246                 $photodata = @getimagesize($src);
 247
 248                 if (($photodata) && ($photodata[0] > 10) and ($photodata[1] > 10))
 249                         $siteinfo["images"][] = array("src"=>$src,
 250                                                         "width"=>$photodata[0],
 251                                                         "height"=>$photodata[1]);
 252         }
 253
 254         if ((@$siteinfo["text"] == "") AND (@$siteinfo["title"] != "") AND !$no_guessing) {
 255                 $text = "";
 256
 257                 $list = $xpath->query("//div[@class='article']");
 258                 foreach ($list as $node)
 259                         if (strlen($node->nodeValue) > 40)
 260                                 $text .= " ".trim($node->nodeValue);
 261
 262                 if ($text == "") {
 263                         $list = $xpath->query("//div[@class='content']");
 264                         foreach ($list as $node)
 265                                 if (strlen($node->nodeValue) > 40)
 266                                         $text .= " ".trim($node->nodeValue);
 267                 }
 268
 269                 // If none text was found then take the paragraph content
 270                 if ($text == "") {
 271                         $list = $xpath->query("//p");
 272                         foreach ($list as $node)
 273                                 if (strlen($node->nodeValue) > 40)
 274                                         $text .= " ".trim($node->nodeValue);
 275                 }
 276
 277                 if ($text != "") {
 278                         $text = trim(str_replace(array("\n", "\r"), array(" ", " "), $text));
 279
 280                         while (strpos($text, "  "))
 281                                 $text = trim(str_replace("  ", " ", $text));
 282
 283                         $siteinfo["text"] = trim(html_entity_decode(substr($text,0,350), ENT_QUOTES, "UTF-8").'...');
 284                 }
 285         }
 286
 287         return($siteinfo);
 288 }
 289
 290 function arr_add_hashes(&$item,$k) {
 291         $item = '#' . $item;
 292 }
 293
 294 function parse_url_content(&$a) {
 295
 296         $text = null;
 297         $str_tags = '';
 298
 299         $textmode = false;
 300
 301         if(local_user() && (! feature_enabled(local_user(),'richtext')))
 302                 $textmode = true;
 303
 304         //if($textmode)
 305         $br = (($textmode) ? "\n" : '<br />');
 306
 307         if(x($_GET,'binurl'))
 308                 $url = trim(hex2bin($_GET['binurl']));
 309         else
 310                 $url = trim($_GET['url']);
 311
 312         if($_GET['title'])
 313                 $title = strip_tags(trim($_GET['title']));
 314
 315         if($_GET['description'])
 316                 $text = strip_tags(trim($_GET['description']));
 317
 318         if($_GET['tags']) {
 319                 $arr_tags = str_getcsv($_GET['tags']);
 320                 if(count($arr_tags)) {
 321                         array_walk($arr_tags,'arr_add_hashes');
 322                         $str_tags = $br . implode(' ',$arr_tags) . $br;
 323                 }
 324         }
 325
 326         logger('parse_url: ' . $url);
 327
 328         if($textmode)
 329                 $template = '[bookmark=%s]%s[/bookmark]%s';
 330         else
 331                 $template = "<a class=\"bookmark\" href=\"%s\" >%s</a>%s";
 332
 333         $arr = array('url' => $url, 'text' => '');
 334
 335         call_hooks('parse_link', $arr);
 336
 337         if(strlen($arr['text'])) {
 338                 echo $arr['text'];
 339                 killme();
 340         }
 341
 342
 343         if($url && $title && $text) {
 344
 345                 $title = str_replace(array("\r","\n"),array('',''),$title);
 346
 347                 if($textmode)
 348                         $text = '[quote]' . trim($text) . '[/quote]' . $br;
 349                 else {
 350                         $text = '<blockquote>' . htmlspecialchars(trim($text)) . '</blockquote><br />';
 351                         $title = htmlspecialchars($title);
 352                 }
 353
 354                 $result = sprintf($template,$url,($title) ? $title : $url,$text) . $str_tags;
 355
 356                 logger('parse_url (unparsed): returns: ' . $result);
 357
 358                 echo $result;
 359                 killme();
 360         }
 361
 362         $siteinfo = parseurl_getsiteinfo($url);
 363
 364         $sitedata = "";
 365
 366         if($siteinfo["title"] == "") {
 367                 $sitedata .= sprintf($template,$url,$url,'') . $str_tags;
 368                 killme();
 369         } else {
 370                 $text = $siteinfo["text"];
 371                 $title = $siteinfo["title"];
 372         }
 373
 374         $image = "";
 375
 376         if(sizeof($siteinfo["images"]) > 0){
 377                 /* Execute below code only if image is present in siteinfo */
 378
 379                 $total_images = 0;
 380                 $max_images = get_config('system','max_bookmark_images');
 381                 if($max_images === false)
 382                         $max_images = 2;
 383                 else
 384                         $max_images = intval($max_images);
 385
 386                 foreach ($siteinfo["images"] as $imagedata) {
 387                         if($textmode)
 388                                 $image .= '[img='.$imagedata["width"].'x'.$imagedata["height"].']'.$imagedata["src"].'[/img]' . "\n";
 389                         else
 390                                 $image .= '<img height="'.$imagedata["height"].'" width="'.$imagedata["width"].'" src="'.$imagedata["src"].'" alt="photo" /><br />';
 391                         $total_images ++;
 392                         if($max_images && $max_images >= $total_images)
 393                                 break;
 394         }
 395         }
 396
 397         if(strlen($text)) {
 398                 if($textmode)
 399                         $text = '[quote]'.trim($text).'[/quote]';
 400                 else
 401                         $text = '<blockquote>'.htmlspecialchars(trim($text)).'</blockquote>';
 402         }
 403
 404         if($image)
 405                 $text = $br.$br.$image.$text;
 406         else
 407                 $text = $br.$text;
 408
 409         $title = str_replace(array("\r","\n"),array('',''),$title);
 410
 411         $result = sprintf($template,$url,($title) ? $title : $url,$text) . $str_tags;
 412
 413         logger('parse_url: returns: ' . $result);
 414
 415         $sitedata .=  trim($result);
 416
 417         if (($siteinfo["type"] != "photo"))
 418                 echo "[class=type-link]".$sitedata."[/class]";
 419         else
 420                 echo "[class=type-photo]".$title.$br.$image."[/class]";
 421
 422         killme();
 423 }